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Reference.org
Arcminute Cosmology Bolometer Array Receiver
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<p>ACBAR was an experiment to measure the anisotropy of the <a href="/facts/Cosmic_microwave_background/ThB2HkLS">Cosmic microwave background</a>. It was active 2000-2008. </p><p>The ACBAR 145 GHz measurements were the most precise high multipole measurements of the CMB at the time. </p>